Akademik Veri Yönetim Sistemi
Genomics-aided Breeding Strategies for Biotic Stress in Grain Legumes, Springer Nature, ss.405-441, 2024
Grasspea (Lathyrus sativus L.) is a cool-season legume, highly stress-tolerant crop. It is less affected by abiotic factors and grown for human and animal consumption in East Africa and Asia. It is an underutilised source of protein, calories and homoarginine for populations residing in areas with frequently changing climatic conditions (drought, heat, etc.) in areas of Asia and Africa. However, it is a viable crop option for agroecosystems where major crop species are difficult for successful cultivation. The major limitation in grasspea cultivation is a neurotoxin (β-ODAP: β-N-oxalyl-l-α, β-diamino propionic acid) identified to cause neurolathyrism in humans and animals. Furthermore, the only way to benefit from this ‘neglected and underutilised crop’ is through genetic manipulation through strategic genetic and genomic-based approaches for lowering the ODAP content in grasspea. A great number of ex situ collections of Lathyrus genetic resources have been collected in a number of gene banks across the world through the processes of collecting, conservation, evaluation and characterisa tion. Despite the presence of crop wild relatives (CWRs) with useful traits for agronomical and biochemical purposes, it was observed that no effort had been made to introduce alien genes into grasspea. Although the grasspea varieties are less affected by biotic stresses, thereafter, considerable yield losses incur around 15–20% due to disease and pests. Until now, negligible genetic resources have been utilised to develop grasspea varieties resistant to biotic stresses (disease and pests). However, most of the significant yield loss is caused by foliar diseases in grasspea. This chapter reviews the current state of grasspea genetic resources and their utilisation for developing genotypes that are resistant to biotic stress.